1) Does Alumnium react with steam to give metal oxide and hydrogen gas?
2) Does Aluminium react with dilute hydrochloric acid? What are the products?
3) Will Tin react with dilute hydrochloric acid to give tin(II)chloride and hydrogen gas?
You need to look at the activity series. Yes to 1 and 3.
http://en.wikipedia.org/wiki/Reactivity_series
1) To determine if aluminum reacts with steam to give metal oxide and hydrogen gas, you need to look at the chemical equation for the reaction. In this case, it would be:
2Al + 3H2O -> Al2O3 + 3H2
This equation represents the reaction of aluminum with steam to yield aluminum oxide (Al2O3) and hydrogen gas (H2). By balancing the equation, you can see that for every 2 moles of aluminum, 3 moles of water are required. This reaction occurs at high temperatures.
2) To find out if aluminum reacts with dilute hydrochloric acid, you can again refer to the chemical equation for the reaction:
2Al + 6HCl -> 2AlCl3 + 3H2
This equation shows that aluminum reacts with dilute hydrochloric acid to produce aluminum chloride (AlCl3) and hydrogen gas (H2). By balancing the equation, you can see that for every 2 moles of aluminum, 6 moles of hydrochloric acid are required. This reaction occurs at a rapid rate.
3) To determine if tin reacts with dilute hydrochloric acid to yield tin(II) chloride and hydrogen gas, you can refer to the following chemical equation:
Sn + 2HCl -> SnCl2 + H2
This equation shows that tin reacts with dilute hydrochloric acid to produce tin(II) chloride (SnCl2) and hydrogen gas (H2). By balancing the equation, you can see that for every 1 mole of tin, 2 moles of hydrochloric acid are required. This reaction occurs at a moderate rate.